Update frei0r_lenscorrection.xml adding (keyframable) to the effect name

data/effects/frei0r/frei0r_lenscorrection.xml

 <!DOCTYPE kpartgui>
 <effect tag="frei0r.lenscorrection" id="frei0r.lenscorrection">
-	<name>Lens Correction</name>
+	<name>Lens Correction  (keyframable)</name>
 	<description>Allows compensation of lens distortion</description>
 	<author>Richard Spindler</author>
         <parameter type="animated" name="xcenter" default="0.5" min="0" max="1000" factor="1000">